Valid simulation of bond-slip behavior between concrete and reinforcement

Authors

School of Civil Engineering, Iran University of Science and Technology, Tehran, Irna

Abstract

The behavior of the reinforced concrete structures is influenced by the bond slip mechanism between concrete and rebar. The performance and strength of the structure are strongly affected by this mechanism. For this aim, it is indispensable to take bond slip effects into account when analyzing the reinforced concrete structures. In the current study bond slip models for plain as well as deformed bar have been investigated. To do this, the simulation of pull out test in finite element software, ABAQUS, is utilized. In this simulation in order to take bond slip effects into consideration, steel nodes are connected to that of adjacent concrete through non-linear springs. The behavior of these springs is defined based on a variety of bond slip models for plain and deformed bar with respect to short and long bonded length. Furthermore, a new bond slip model for deformed bar is proposed and the results of this model are compared with experimental results. Eventually, merits and demerits of the models have been explained.

Keywords

References

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Journal of Civil and Environmental Engineering
Volume 50.4, Issue 101 - Serial Number 101
Winter 2021
February 2021
Pages 73-82

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